Combination spring-seat and spring-back.



G. W. ROBERTSON. COMBINATION SPRING SEAT AND SPRING BACK.

APPLICATION FILED $EP-T.8,1910.

HIM.

ATTORNEYS Patented July 9, 1912.

Specification of Letters Patent.

Patented July 9, 1912.

To all whom it may concern:

Be it known that I, GEORGE W. ROBERT- SON, a citizen of the UnitedStates, and a resident of Mount Vernon, in the county of Posey and Stateof Indiana, have invented certain new and useful Improvements inCombination Spring- Seats and Spring- Backs, of which the following is aspecification.

My invention is an improvement in com bination spring seat and springback, and consists in certain novel constructions, and. combinations ofparts, hereinafter described and claimed.

The object of the invention is to provide a combined spring seat andback, so constructed that the back may move from side to side in thedirection of its plane, as well as laterally in a directionperpendicular to its plane, whereby to conform with the vertical ordirect up and down movement of the seat.

Referring to the drawings forming a part hereof, Figure l is atransverse vertical section of the improvement. Fig. 2 is a perspectiveview of a part of the frame. Fig. 3 is a similar view of a portion ofthe seat and back, showing their connection with each other. Fig. 4 is aperspective view of a spring holding strip. Fig. 5 is a similar view ofa spring and its holding means, and Fig. 6 is a side view of amodifiedform of spring which may be-used in back in-place of coilsprings.

In the embodiment of the invention shown in the drawings. both the seatand the back are composed of a plurality of open rectangular frames 1shown in Fig. 2, each frame being of a shape and size corresponding tothe shape and size of the seat.

The side members of each frame are connected by cross strips 2 (Fig. 4),each .of which extends from one side member to the opposite member, andeach end of the strip is bent around the side member as shown at I 3.The strips connecting opposite side members are arranged in spaced andparallel relation, as shown, and cross the strips connecting the otherside members at right angles- Each strip 2 is provided with a pluralityof lugs 4, each of which is struck up from the strip as shown. The lugsare arranged in pairs, apair adjacent to each crossing of the strips,and with one member of the pair on one side of the crossing, and theother memher on the other side. By this arrangement Application filed.September 8, 1910. Serial No. 581,032.

four lugs are provided at each crossing of the strips, and as themembers of each pair are oppositely arranged and face each other, thefour lugs face inwardly as shown. The frames 1 are arranged insuperposed relation, and are held spaced apart by coil springs 5.

Each of the springs 5 is of smaller diameter at its center, andincreases in diameter toward its ends, and one end of each spring isheld to one frame by the lugs 4 engaging the endmost spiral, and theother end to the other frame in a similar manner.

The lower frame of theseat rests directly upon the support 6, and therear frame of the back rests against the back 7 of the support. Theupper frame of the seat and the front frame of the back are connected attheir meeting edges as shown in Fig. 3.

A strap 8 is secured to the lower end of each of the vertical strips 2by rivets 9 or other suitable means, and each strap extends beyond theadjacent member of the said frame, and is provided with an opening 10. Astrap 11 is secured to each of the strips 2 of the upper frame of theseat that run from front to rear, and the free end of each strap 11extends outside of the frame, and is curved downward as shown at 12.

The'free ends of the straps 11 engage the openings 10 of the straps 8,and the adjacent side member of the upper frame of the seat limits therearward movement of the said upper frame by its engagement with thestraps 8.

With the above described arrangement, the upper frames of the back andseat may move toward and from the lower frames, and may also movelaterally with respect to the said lower frames. When the seat isdepressed, that is, when the upper frame moves downwardly, the frontframe of the back is carried down with the said upper frame.

The movable frames oft-he front and back move with each other in everydirection. When the front frame of the back is moved reafwardly, theupper frame of the seat is also carried rearwardly. With the arrangementspecified, the disagreeable rubbing of the occupants back against theback of the seat is eliminated, as is also all rubbing.

The seat and back are upholstered as shown at 13 and 14, respectively,and the upholstering is carried over the edges of both seat and back asshown at 15, so that all of the metal parts are hidden from view.

In the construction shown in Fig. 1, the upholstering covers the ends ofthe seat and back, extending across the space between the frames, andforms the only connection between the frames. The said strips 16 aresubstantially U-shaped, and the arms 17 of the strips are secured to theframes by rivets 18, or other suitable means. It is evident that theframes comprising the improved seat and back may be of any desired shapeand dimensions, and the frames may be covered with any suitable ordesired covering. Both of the parts mentioned are to be covered withpadding 19 as shown in Fig. 1. The upper frames of the seat and back mayalso be connected in any suitable or desirable manner, but theconnection is preferably so arranged as to permit a limited slidingmovement of the back frame with respect to the seat frame.

In Fig. 1, the lower or rear frame of the back is shown as hinged at 20to the back support 7, at the upper edge thereof. Thus the back cushionmay be swung upwardly for cleaning or other purposes.

To permit the above described movement of the back, the seat cushion isremoved by pulling the said cushion directly forward until the straps 11are disengaged from the openings 10 of the'straps 8.

The seat and back may be in one or more sections as desired, inaccordance with the size of the parts. The sections are placed withtheir edges abutting. The cut away portion 21 of the seat is to permitarticles to be stored in the box 6, and will in actual use he covered bya hinged lid.

It is to be understood that-considerable changes can be made in theconstruction, without departing from the spirit of the invention.

In the construction shown in Fig. 6, the springs 5 are omitted in theback, and are replaced by the substantially U-shaped resilient straps16, which connect the ends of the corresponding straps 1 of each frame.

I claim 1. In seat construction, a seat and a back,

each. consisting of a pair of superposed open frames, a plurality ofseries of strips arranged transversely of each frame, the members of oneseries being at right angles to the members of the other series, spiralsprings between the members of each pair of frames, and a connectionbetween the adj acent edges of the upper frames of the seat and theback, said connection comprising a plurality of straps connected witheach frame and extending toward the other frame, the straps connectedwith the back frame having openings for receiving the 'strapsconnectedwith the seat frame, said last-named straps having their free ends bentdownwardly to prevent disengagement of the straps.

2. In seat construction, a seat and a back,

each consisting of a pair of superposed frames, springs between eachpair of frames for holding them in spaced relation, and a connectionbetween the upper frames of the seat and the back, said connectionCOIIIPIlS- ing a plurality of straps secured to and extending from eachframe toward the other frame, the straps of the back frame havingopenings through which the straps of the seat frame extend.

3. In seat construction, a seat and a back, each consisting of a frame,springs for supporting each of the said frames, and a connection betweenthe said frames at their adjacent edges, said connection comprisingstraps secured to each frame and extending toward the other frame, thestraps of the back frame having openings through which the straps of theseat frame extend.

4. In seat construction, a seat and a back, each consisting of a frame,springs for supporting each of the said frames, and a connection betweenthe said frames at their GEORGE w. ROBERTSON.

Witnesses HENRY KLING, GEO. W. CURTIS.

